<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .inner {
            display: inline-block;
        }
    </style>
</head>
<body>
    <ul class="inner">
        <li>1.xxx</li>
        <li>2.xxxx</li>
    </ul>
    <ul class="inner">
        <li>I.xxx</li>
        <li>II.xxx</li>
    </ul>
    <dl>
        <dt>1111</dt>
        <dt>2222</dt>
        <dt>3333</dt>
    </dl>
    <dl>
        <dt>1111</dt>
        <dt>2222</dt>
        <dt>3333</dt>
    </dl>
</body>
</html>